AMF Katalog 13

Hydraulic clamping systems Catalogue 2013

all sales are subject to our terms of sale, delivery, and payment. all rights for design, photographs and texts reserved by the publisher, amF. no photomechanical reproduction without our express permission. 2013/6en > mg -/4./-/-/03/2013 > printed in germany

CLAMPING. SCREWING. LOCKING.

AndreAs MAier GmbH & Co. KGWaiblinger Strae 116 D-70734 FellbachPostfach 1760 D-70707 FellbachPhone: +49 711 5766-0Fax: +49 711 575725e-mail: [email protected]: www.amf.de

bar-1

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Hydraulic clamping systemsmagnetic clamping tecHnology

clamping and Fixture systemsZero-point clamping system

Vacuum clamping tecHnology

toggle clampsmanual and pneumatic

Hand toolsmecHanical clamping elements

salesPhone: +49 711 5766-112Fax: +49 711 575725e-mail: [email protected]

Catalogue order no. 446435 3,60

Hydraulic clamping systems CLAMPING. SCREWING. LOCKING.

Catalogue 2013

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Katalog_2012_Hydraulik_EN_Umschlag.indd 1 3/25/2013 1:05:30 PM

Managing Directors> Johannes maier

Volker gbel

tHe aMF serVice gUarantee> assuredly on the way to the top

5 individual development And if the product you need doesnt exist? Just ask us: We will find the best solution for you whether it is a special version or a completely new development.

4 Warranty We stand by our high quality standards. We handle customer complaints very liberally and without red tape whenever possible even after the end of the warranty period.

3 Guaranteed quality standard AMF stands for manufacturing in-house with the utmost care. A tradition we have upheld since 1890 and naturally for many years now with a modern quality management system to ISO 9001.

2 short delivery times AMFs finished goods inventory with over 5,000 items guarantees a delivery readiness of 98%. You can also count on each warehouse item you order being shipped to you on the same day.

1 service from genuine experts Different tasks, different solutions. In AMFs professional product range, you can find the right solution quickly and reliably: either from your local dealer or with help from the specialists in our teams. A phone call is all it takes.

e Made in Germany It goes without saying that our range of products is developed and manufactured by our team of employees in Germany.

We generate exciteMent

since its founding by andreas maier in 1890, our company has lived

though many exciting times. today we are the leading manufacturer

in Europe, supplying over 5,000 dif ferent products from the fields of

clamping, hand tools and locks. With this extensive product range we

can meet all of our customers needs and requirements. But providing

optimal quality means meeting the challenges at all levels: expert

consultation, modern team organisation, individual solutions (including

special developments), f lexibil ity in response to changing conditions, etc.

and we ourselves find this so exciting that we look forward every day

to shaping the market together with our employees and our customers

both now and in the future. that is something you can count on.

2 Hydraulic clamping systems andreas maier FellBacH www.amf.de

We are your partner in innovation for solutions to mechanical, pneumatic, and hydraulic clamping problems.

reduction of set-up times

advice

automation solutions

cad data in over 60 formats with kinematics and collision functions

Just test us!

Your ideAs WorKsHop.

With amF you are always a step ahead! amF cad data are transmitted to sub-assemblies with active links. this feature can be exploited by the cad systems solid Works, unigraphic, inventor and Catia V5.

Further advantages: > complete transmission of

the structure tree, including all accessories, with all cad systems!

> When parts lists are generated, the article designations from the structure tree are automatically incorporated.

> ordering procedures can thus be initiated directly.

> in addition, sample functions are transmitted which a) increase computer speed and b) simplify the job of the tool designer.

> When they are not needed, the sample functions can be suppressed.

CLAMPING. SCREWING. LOCKING. With Service Guarantee.

andreas maier FellBacH www.amf.de Hydraulic clamping systems 251

CoMpAnY HistorY

1890 Company founded as a lock manufacturer by Andreas Maier.

1920 Product range extended to include spanners.

1928 Production line assembly of Fellbach locks.

1951 AMF introduces clamping elements and diversifies into workpiece and tool clamping technology.

1965 Toggle clamps extend the AMF product range. AMF catalogues are now printed in ten languages.

1975 Further specialisation into hydraulic clamping technology.

1982 Clamping and fixture systems round off AMFs clamping expertise.

1996 AMF team organisation in all sectors of the business. Quality management with certification to ISO 9001.

2001 AMF Service Guarantee for all products.

2004 Introduction of the ZPS zero-point clamping system.

2007 The magnetic clamping technology extends the AMF product range.

2009 Development and marketing of AMF Vacuum clamping technology

2012 Marking and cleaning tools included in the AMF product range.

produCts on tHe CoverHydraulic pull-down spring clamp, eccentric No. 6970D, page 132 Vertical Clamp No. 6958DT, page 113 Swing clamp No. 6952E, page 83

Katalog_2012_Hydraulik_EN_Umschlag.indd 2 3/25/2013 1:05:44 PM

ANDREAS MAIER FELLBACH www.amf.de Hydraulic clamping SyStemS 3

preSSure generatorS 9 - 30

Hollow-rod and Built-in cylinderS 31 - 44

tHreaded and Block cylinderS 45 - 70

puSH-pull cylinderS, 71 - 102

Swing clampS

low-preSSure clamping tecHnology 157 - 170

ValVeS, preSSure SwitcHeS, FilterS 171 - 216 rotary couplingS and acceSSorieS

tool clamping For preSSeS 217 - 242

Vertical and link clampS, 103 - 126 toggle clampS

pull-down clamping elementS 127 - 142

Support elementS, compenSating clampS 143 - 156

ContentsFor an overview by item number and order number, see catalogue pages 244 - 247

Katalog_2012_Hydraulik_EN_ohnePreise.indd 3 3/28/2013 8:24:54 AM

4 Hydraulic clamping SyStemS ANDREAS MAIER FELLBACH www.amf.de

Our innovations and highlights ...

SWING CLAMP, CARTRIDGE FLANGENo. 6952E, page 83

LINK CLAMPNo. 6959C, page 116 new size

VERTICAL CLAMPNo. 6958AT, page 107 and

No. 6958AU, page 106

SWING CLAMPNo. 6941K, page 158

LINK CLAMPNo. 6942KK, page 165

VERTICAL CLAMPNo. 6958DU, page 112 and

No. 6958DT, page 113 new size

NEW!

NEW!

NEW!



... at a glance

SCREW-IN COUPLING MECHANISMNo. 6989M, page 190

SCREW-IN COUPLING NIPPLENo. 6989N, page 191

PUMP UNITmax. operating pressure 160 bar No. 6906, page 16

MEASURING COUPLINGNo. 6990-20, page 212

HYDRAULIC PULL-DOWN SPRING CLAMP, ECCENTRIC

No. 6970D, page 132-133

SWING CLAMPNo. 6951KP, page 94-95 and

No. 6951FP, page 96-97

HYDRAULIC COMPENSATING CLAMPNo. 6965, page 154

NEW!


Subject to technical alterations.


Important and interesting facts

RECOMMENDATIONS AND PARAMETERS OF OIL-HYDRAULIC DEVICES AND PLANTS.

GENERAL: In this catalogue, parameters are published following the VDI Guidelines 3267 to 3284.

OIL RECOMMENDATION: Oil temperature (C) designation to DIN 51 524 viscosity to DIN 51 519 040 HL, HLP or HLPD 22 ISO VG 22 1050 HL, HLP or HLPD 32 ISO VG 32

CLAMPING ELEMENTS:

Pressure range: At continuous pressures below 80 bar, this must be stated on ordering as a dif ferent seal combination may need to be selected.

Ambient temperature: 10C to +60C

Thermal expansion: If thermal expansion is prevented in a hydraulic system, the pressure rises by about 10 bar per 1 C temperature increase. Such conditions require overpressure protection.

Seals: > O-rings made of NBR or PU > Supporting rings made of PTFE > Flange seals made of PTFE, NBR, PU or Cu > Glydring made of PTFE or PU > Scraper ring made of PU or NBR

At higher ambient temperatures, clamping elements have to be equipped with heat-resistant seals (Viton or similar). These are available upon request..

Mounting position: As desired, unless otherwise specif ied.

Piston radial force: The piston radial force must never exceed 5% of the nominal cylinder force.

Stroke speed: 0.01 0.5 m/s (for swing clamps, always observe the specif ications!).

Leakage rate: Dynamic = up to 32 mm piston dia.: < 0.3 cm per 1000 double strokes and 10 mm stroke (HLP 22) from 40 mm piston dia.: < 0.6 cm per 1000 double strokes and 10 mm stroke (HLP 22) Static = no leakage rate

FOR YOUR SAFETY: To avoid injuries, a maximum distance of 4 mm (in accordance with DIN 31001, part 1) between workpiece and clamping element must not be exceeded.

To ensure safe clamping, clamping elements must be positioned in such a way that a residual stroke remains in the clamping cylinder after clamping..

HOSE CONNECTIONS: When using high-pressure hoses, the following must be observed: > maximum operating pressure > bending radius > tightening torque of cap nut > dynamic or static use > environmental influences > the date for the permissible duration of use

PIPES: Seamless steel pipe, phosphatised and oiled, dia. 8x2 mm, in accordance with DIN 2391 C. Pipes must be kept as short as possible, especially when used with single-action cylinders. Pipe bends must be made to the largest possible radius.

CONNECTING THREADS: Whitworth pipe thread, X-type threaded bore in accordance with DIN 3852, page 2. Seal by means of sealing edge. Do not use Teflon tape or additional sealing compound.

STATIC PRESSURE IN HYDRAULIC SYSTEM: Cylinders, valves or l ines and couplings create internal friction. An oil pressure of approx 2 bar is

required to overcome this static pressure. For single-acting cylinders with return springs, the static pressure must be reduced by keeping the supply l ine as short as possible and using piston rods with the smallest possible mass.

For double-acting elements, static pressures increases when load is applied to the rod side. Parts of the relatively large oil volume on the piston side cannot drain quickly enough. Static pressure does usually not affect the clamping elements.

COMMISSIONING AND MAINTENANCE: > Use only clean hydraulic oil of the specif ied type.

> Observe all instructions and information provided in mounting instructions before commissioning! > Vent the hydraulic system at low operating pressure at the highest point until the f luid is free of bubbles.

Hydraulic directional valves are very sensitive to soil ing and contamination. Contamination and soil ing of the pressure medium must be avoided. An oil change every six months is recommended. The oil level in the pressure generator must be checked regularly.





HYDRAULIC PARAMETERS, UNITS AND FORMULA SYMbOLS:

TECHNICAL EqUATIONS:

Clamping force:

Required operating pressure:

Oil volume per cylinder:

Clamping time:

F (N) = 10 x A (cm2) x p (bar)

p (bar) =

V (cm3) = 0,1 x A (cm2) x stroke (mm)

t (s) = 1+A (cm2) x stroke (mm) x n (nos of cyl.)

Q (l/min.) x 167

The units used in this catalogue for physical quantities are in accordance with

DIN 1301.

CLAMPING FORCE OF bOLTS:

For hydraulic clamping, the fatigue strength of the bolts

is considered to obtain a high number of strokes. The

testing force or yield strength must only be util ized for

low numbers of strokes.

NOMINAL CYLINDER SIzES:

The nominal cylinder sizes are intended to facil itate

cylinder selection: These sizes correspond to the

clamping force in kN, related to the maximum operating

pressure in each case (usually 400 bar) and the

ef fective piston area.

Nominal cylinder

size

Piston dia.

[mm]

Piston area

[cm2]

Clamping force F en kN

100 bar 250 bar 350 bar 400 bar 500 bar2,0 8,0 0,5 0,50 1,25 1,75 2,0 2,52,4 9,0 0,7 0,68 1,70 2,40 - -4,4 12,5 1,3 1,25 3,10 4,40 - -5,0 12,0 1,1 1,10 2,80 3,80 4,4 5,55,9 14,7 1,7 1,70 4,20 5,90 - -6,6 15,5 1,9 1,90 4,70 6,60 - -8,0 16,0 2,0 2,00 5,00 7,00 8,0 10,0

10,1 19,0 2,9 2,88 7,20 10,1 - -12,0 20,0 3,1 3,00 7,50 10,9 12,0 15,014,0 22,0 4,0 4,00 10,0 14,0 - -17,5 25,0 5,0 5,00 12,7 17,5 - -17,8 25,0 5,1 5,08 12,7 17,8 - -20,0 25,0 4,9 5,00 12,5 17,2 20,0 24,532,0 32,0 8,0 8,00 20,0 28,0 32,0 40,039,9 38,0 11,4 11,4 28,5 39,9 - -50,0 40,0 12,5 12,5 31,0 43,8 50,0 62,563,0 45,0 15,9 15,9 39,1 55,6 63,6 79,570,0 48,0 18,0 18,0 45,0 63,0 72,0 90,078,0 50,0 19,6 19,6 49,0 68,6 78,4 98,094,0 55,0 23,7 23,7 59,2 83,0 94,8 118,5

125,0 63,0 31,1 31,1 78,0 108,8 124,0 155,5

Clamping bolts Hydraulic cylinders

Thread

Pitch

[mm]

Nominal cross-

section As

[mm2]

Testing force for

bolt grade 8.8

[kN]

Permissi-ble load for continuous operation

[kN]

Nominal cylinder size

2 5 8 12 20 32 50 70 125M 6 1,00 20,1 11,6 4,3M 8 1,25 36,6 21,2 8,0M 10 1,50 58,0 33,7 12,5M 12 1,75 84,3 48,9 18,3M 14 2,00 115,0 66,7 25,0M 16 2,00 157,0 91,0 34,0M 18 2,50 192,0 115,0 43,0M 20 2,50 245,0 147,0 55,0M 24 3,00 253,0 212,0 79,5M 27 3,00 459,0 275,0 103,0M 30 3,50 561,0 337,0 126,0

Symbol Unit Description Unit Conversion

F N Force Newton 1 N 0,1 kp1 kN 100 kp

pbar

Pressurebar

1 bar =10 N/cm 1 atm. = 10 N/m

Pa Pascal 1 Pa = 1 N/m

A cm Effective piston area - 1 m = 10 cm

V cm Volume - 1 dm = 1000 cm = 1l (Liter)t s Time second -

Q Oil-flow rate - 1 = 16,67 l mincm

sl

min

0,1 x F (N)A (cm2)

Effective piston area A

Return spring Stroke

Pressure p

Flow Q

Volume

Clamping

Stroke

force F





IMPORTANT INFORMATION AbOUT OUR INSTALLATION DRAWINGS.ALL INSTALLATION DRAWINGS IN THIS CATALOGUE ARE IN FIRST-ANGLE PROjECTION (DIN)!

CONVERSION FACTORS:

pressure: mpa bar pSi

1 mpa 1 10 145,04

1 bar 0,1 1 14,504

1 pSi 0,00689 0,0689 1

mpa = Megapascal pSi = lb/sq. inch

length: mm inch

1 inch 25,399 1

1 mm 1 0,0393

temperature: k c F

k 1 C x + 273,15 (F-459,67) x 5/9

c K - 273,15 1 (F - 32) x 5/9

F K x 9/5 + 459,67 C x 9/5 +32 1

k = Kelvin c = degree Celsius F = degree Fahrenheit

Location of other views in relation to front elevation, V:

Symbol:

D Plan view below V

SL Side elevation from left

to the right of V

SR Side elevation from right

to the left of V

U Bottom view above V

R Rear view to the left or right of V

FIRST-ANGLE PROjECTION (DIN)

Location of other views in relation to front elevation, V:

Symbol:

THIRD-ANGLE PROjECTION (ANSI / USA)

D Plan view above V

SL Side elevation from left

to the left of V

SR Side elevation from right

to the right of V

U Bottom view below V

R Rear view to the left or right of V



type Single-acting double-acting clamping circuits output flow effective

oil volume [l]

6901 1 2,1 cm / Rotation 0,026

6902 1 11,25 / 2,47 cm / Stroke 1,0

6904 1 0,85 l/min. 2,1

6906 1 - 5 2,5 l/min. 5,0

> operating pressure up to 700 bar

> easy to use

> ready for connection

> ready for operation

> variety of options

> compact design

> single and double-acting variants

> modular design of pump

> various valve combinations

> available with and without electric controller

> external control optional

> continuous pressure control by adjustment spindle

> valves in the de-energised condition in locked position

PRESSURE GENERATORS: THE OPTIMAL SOLUTION FOR ANY APPLICATION!

PRODUCT ExAMPLES:

no. 6902 no. 6904 no. 6906

PRODUCT OVERVIEW:

> Operating pressure 700 bar > 1 clamping circuit > No pressure adjustment

> Operating pressure 500 bar > 1 clamping circuit> Automatic pressure-adjustment

> Operating pressure 160 bar / 400 bar > 1 to 5 clamping circuits > Automatic pressure-adjustment




Screw Pump

block version and built-in version, max. operating pressure 350 bar.

Screw PumpNo. 6901

Order no.

Article no. max. operating pressure

[bar]

stroke volume per rev.[cm]

stroke volume total[cm]

max. torque at spindle

[Nm]

Weight

[g]67819 6901-10 350 2,1 26 50 152467835 6901-20 350 2,1 26 50 689

Design:Housing made of steel, hardened and blued. Threaded spindle hardened and blued. Screw pump no. 6901-20 is supplied with 2 grooved nuts.

Application:The screw pump is particularily suitable to operate small clamping fixtures.

Note:For an enclosed circuit the following has to be considered: The hydraulic clamping elements connected to the screw pump have to be hermetically tight. Due to possible leakage of the clamping cylinders during stroke movement and the compressibility of oil (1% at 140 bar), the stroke volume of the screw pump shall be used up to 70% only. The compressibility is being increased considerabely by air content in the oil. Therefore the hydraulic system has to be carefully purged of air. An air bleed screw at the highest position is a necessity. After returing the spindle of the pump, oil must be refilled at this spot. No air pocket should arise in the hydraulic system, which cannot be purged. A precise pressure control is possible by a manometer only. An electric pressure switch enables a pressure monitoring too. A pressure limiting valve is not suitable. Operating the threaded spindle by a torque wrench is possible. However the pressure should also be checked by a gauge. For the built-in version the mounting torque has to be observed.

Clamping pressurein relation to torque:

13,5 27,0 34,0 40,5 47,5

Torque [Nm]

70 140 205 275 350

Clamping pressure [bar]

No. 6901-10

No. 6901-20

Threaded plug

Stroke 51

Stroke 51

Oil connection




Hand Pump

max. operating pressure 1st stage 50 bar, max. operating pressure 2nd stage 700 bar.

Hand PumpNo. 6902

Order no.

Article no. Displacement per stroke 1st stage

[cm]

Displacement per stroke 2nd stage

[cm]

Q effective

[cm]

max. hand lever force

[N]

A B Weight

[Kg]61937 6902-7 20 1 300 350 320 275 6,061945 6902-8 20 2 1000 320 620 575 8,1

Design:Light weight two-speed hand-pump. Small hand force required even by max. operating pressure. Pump housing out of mechan malleable cast iron. Oil reservoir made of alluminium. With pressure relief valve, factory set at max. pressure of 700 bar. Oil filling included.

Application:Typical applications for the hand-pump are e.g. small clamping fixtures with irregular use, testing fixtures or for repair jobs. Please note, in case of a pressure drop the hand-pump is not capable of automatically maintaining system pressure.

Note:Can be operated in horizontal position or vertical position with head facing downwards. Before putting in to operation open combined reservoir vent-and-relief cap. Care for proper air bleeding of connected hydraulic components. Special pumps for different fluids and pressure ratings are available upon request.

Hydraulic diagram:

Return G 1/4

Oil fill Pressureconnection

G1/4

Release valve




Hydraulic intensifier

Temperature -40 - +120CHydraulic intensifier

No. 6903Order

no.Article no. Rato i max. operating

pressure ND[bar]

max. operating pressure HD

[bar]

Q max. ND

[l/min]

Q max. HD

[l/min]

Weight

[g]452060 6903-20-15 1,5 200 300 8 1,0 1000320184 6903-20-20 2,0 200 400 12 2,0 1000275198 6903-20-32 3,2 200 640 15 2,5 1000320192 6903-20-40 4,0 200 800 14 2,0 1000291526 6903-20-50 5,0 160 800 14 1,6 1000320200 6903-20-66 6,6 120 800 13 1,3 1000

Design:For tube connection, all ports with thread G 1/4. Housing galvanised and chromate. Piston and valve seat made of steel.

Application:Hydraulic intensifier are used to pressurise hydraulic clamping fixtures and assembly devices. The low pressure of the tooling machines hydraulic system will be converted into a higher operating pressure according to the ratio. Input pressure and output pressure are proportional. The output pressure can be adjusted by the input pressure.

Features:The most important functions are shown in the hydraulic circuit diagram (see below left). Oil is guided through directional valve CV to input IN and flows unimpeded through check valves KV1, KV2 and DV and into high pressure area H. In these conditions the pressure intensifier achieves a maximum flow rate with rapid forwards motion. Once input pressure IN is achieved in high-pressure area H, valves KV1, KV2 and DV close. The output pressure is built up by oscillating pump unit OP. The unit switches itself off automatically when the output pressure is achieved in high-pressure area H. In case of pressure loss in the high-pressure area due to consumption or loss of oil, pump unit OP starts automatically in order to maintain the output pressure. Pressure can be relieved from the high pressure area via the directly controlled valve DV.

Note:The hydraulic oil must be filtered with mesh size not larger than nominally 10 m, 19/16 according ISO 4406. If the intensifier will be used for applications where the oil supply is disengaged, a leakage free pilot controlled check valve should be installed between high pressure output H and the cylinder. Please consider the min. control pressure for releasing. The design of the intensifier allows a certain leakage between the ports IN and R. This has to be considered in uncoupled operations.

On request:Manifold mounting and other sizes available on request.

Application examples:

Hydraulic diagram:

ND = low pressure side, HD = high pressure side

High-pressure connection H




Air-Hydraulic Pump

Order no.

Article no. Pneum. pressure min.

[bar]

Pneum. pressure max.

[bar]

Oil capacity usable horizontal

[l]

Oil capacity usable vertical

[l]

Q max.

[cm/min]

Weight

[Kg]69435 6904-20 2,8 10,0 2,1 1,5 1400 6,3max. operating pressure 500 bar.

Air-Hydraulic PumpNo. 6904-20

Design:Compact, air operated hydraulic pump for single acting circuits. Robust plastic tank. The motor is protected against contamination by an air filter at air inlet and an internal oil filter. The pump is equipped with pressure relief valve and sound absorber.

Application:The air-hydraulic pump can be used for small hydraulic clamping and assembly equipment. The air-hydraulic pump is designed for single acting cylinders.

Features:The large air/oil intensification ratio allows for high hydraulic pressures even with small air pressure. Low weight allows for mobile application. The pump can be mounted horizontally or vertically. Applications in hazardous environment is possible.

Note:Optionally, pumps with other operating pressures are available upon request. Please observe proper venting of the single acting system. All tolerances other than specified refer to DINISO 2768 mittel (medium).

Pressure/flow diagram:

Hydraulic diagram:

Oil connection G1/4Air connection G1/4

Pressure [bar]

Flow

rate [

l/min]

Air pressure




Air-Hydraulic Pump

max. operating pressure 500 bar.Air-Hydraulic PumpNo. 6904-25

Order no.

Article no. Pneum. pressure min.

[bar]

Pneum. pressure max.

[bar]

Oil capacity usable horizontal

[l]

Oil capacity usable vertical

[l]

Q max.

[cm/min]

Weight

[Kg]69450 6904-25 2,8 10,0 2,1 1,5 1400 6,3

Hydraulic diagram:

Pressure/flow diagram:

Design:Compact, air operated hydraulic pump for single and double acting circuits. Robust plastic tank. The motor is protected against contamination by an air filter at air inlet and an internal oil filter. The pump is equipped with pressure relief valve and sound absorber.

Application:The air-hydraulic pump can be used as drive element for small hydraulic and assembly equipment. Safety is guaranteed by automatic pressure compensation. The air-hydraulic pump is designed for the assembly of valves with connection diagram CETOP 03, i.e. with the option to control single or double acting cylinders. The changeover can be made manually, pneumatically or electrically.

Features:The large air/oil intensification ratio allows for high hydraulic pressures even with small air pres-sure. Low weight allows for mobile application. The pump can be mounted horizontally or vertically. Applications in hazardous environment is possible.

Note:Optionally, pumps with other operating pressures are available upon request. Please observe proper venting of the single acting system. All tolerances other than specified refer to DINISO 2768 mittel (medium).

Oil connection G1/4

Oil connection G1/4

Air connection G1/4

Pressure [bar]

Flow

rate [

l/min]

Air pressure




Accessories for Air-Hydraulic Pump

max. operating pressure 500 bar, min. operating pressure 10 bar.

Seat Valve 3/2 No. 6904-50

Order no.

Article no. NG Q

[l/min]

Weight

[g]271031 6904-50 6 12 444

Design:Design: Seat valve Type of actuation: manual

Application:For single acting cylinders. CETOP 3 adaptation.



Design:Design: Seat valve Type of actuation: electric


Order no.

Article no. NG Q

[l/min]

Weight

[g]259242 6904-52 6 12 740

Order no.

Article no. NG Q

[l/min]

Weight

[g]267427 6904-54 6 12 459max. operating pressure 500 bar, min. operating pressure 10 bar.


Design:Design: Seat valve Type of actuation: pneumatic


Design:Design: Piston valve Type of actuation: manual

Application:For double acting cylinders. CETOP 3 adaptation.


Seat Valve 4/3No. 6904-59

Order no.

Article no. NG Q

[l/min]

Weight

[g]326363 6904-59 6 30 380

Order no.

Article no. NG Q

[l/min]

Weight

[g]322065 6911A-07-01 6 20 2356for O-ring joint, max. operating pressure 400 bar,

min. operating pressure 10 bar.

Seat Valve, 4/3-WayNo. 6911A-07-01

Air filter and pressure regulator

No. 6904-90Order

no.Article no. Air connection Weight

[g]258236 6904-90 G 1/4 740

Application:For double acting cylinders. CETOP 3 adaptation.

Note:Further information can be found under Accessories/Valves.

Application:For Air-Hydraulic Pump No. 6904-20 or -25.




with pressure relief valve and electronic pressure switch, single- and double-acting, max. operating pressure 160 bar.

Pump unitNo. 6906

Pump unit

Design:Compact, pluggable pump unit, can be operated electrically and hydraulically. Complete with: pressure relief valve and pressure switch, solenoid valve, pressure gauge, floating switch with temperature monitoring, oil filling, electrical controller with main switch, control lamps and flange sockets. Electrical connection, complete with CEKON plug, pressure filter with filter mesh of 25m.

Application:These pump units are mainly used as drive and control elements for single- and double-acting clamping devices.

Operation type: Control panel for one and two clamping circuits. Two-hand control panel for only one clamping circuit.

Features:The radial piston pump is driven via an alternating current standard motor with the energy efficiency class IE3. The motor is protected against overload by a motor protection switch and a thermoelement. Pressure setting and pressure monitoring are accomplished via a pressure limiting valve (DBV) and an electronic pressure switch (EDS). The value set at the pressure limiting valve is stored with the Mode button on the pressure switch. This simultaneously sets the preprogrammed switch-off and switch-back point. - High safety standard through the use of 3/3- and 4/3-way seat valves! - No unwanted traversing movements. In the event of a loss of power or contact problems, the valve returns to the hermetically sealed centre position. - Easy activation of external machine controllers (e.g. PLC). The pump unit works in intermittent mode. In the event of a loss of pressure, the pump is subsequently automatically switched by the pressure switch. In the event of a lack of oil or an increase in oil temperature, the built-in floating switch with temperature monitoring switches the pump off and the fault lamp on the electrical controller lights up.

Note:Ensure that the ventilation is working properly when connecting the elements. In the event of a loss of pressure, subsequent pumping must not exceed a maximum of 2 times per minute. The pump unit must not be allowed to run continuously.

Options: Clamping circuits: For up to 5 clamping circuits, there is an electrical controller. For more than 5

clamping circuits, there is no electrical controller. Valve combination: Pressure reduction and clamping pressure monitoring in certain clamping

circuits. Pressure reduction for all subsequent clamping circuits. Pressure filter with filter mesh 10m or 40 m. Throttle valves for specified clamping circuits.

On request:Directional valves with other function diagrams on request. Three to five clamping circuits on request.

Order no.

Article no. Clamping circuits

Q

[l/min]

Valve type Matching control unit

Electronic control

Pressure switch

Weight

[Kg]327643 6906-61760 1 2,5 3/3 - - - 53327668 6906-61761 1 2,5 3/3 6906B-2-1 - 61327684 6906-62760 2 2,5 3/3 - - - 56327700 6906-62761 2 2,5 3/3 6906B-3-2 - 64327726 6906-61660 1 2,5 4/3 - - - 53327742 6906-61661 1 2,5 4/3 6906B-2-1 - 61327635 6906-61661-BZH 1 2,5 4/3 6906BZH-2 2 61327650 6906-62660 2 2,5 4/3 - - - 56327676 6906-62661 2 2,5 4/3 6906B-3-2 - 64

Hydraulic diagramsEnergizing both valve magnets creates a switching position that links all 4 or 3 connections to each other. A depressurised state is created that allows easy coupling.

4/3-directional seat valve for double-acting consumers

3/3-directional seat valve for single-acting consumers

unclamp clamp

coup

ling

uncla

mp

posit

ion 0

clamp

unclamp clamp

coup

ling

uncla

mp

posit

ion 0

clamp




Hydraulic diagrams with DBV and EDS1 Clamping circuit, double-acting 2 Clamping circuits, double-acting

Pump unit

M8 thread for lifting devices

from

min.

664 t

o max

.720

from

min.

508 t

o max

.564




with pressure relief valve and electronic pressure switch, single- and double-acting, max. operating pressure 400 bar.

Pump unitNo. 6906

Order no.


Q

[l/min]


Electronic control

Pressure switch

Weight

[Kg]325902 6906-61710 1 2,5 3/3 - - - 53325910 6906-61711 1 2,5 3/3 6906B-2-1 - 61325936 6906-62710 2 2,5 3/3 - - - 56325944 6906-62711 2 2,5 3/3 6906B-3-2 - 64322214 6906-61610 1 2,5 4/3 - - - 53325951 6906-61611 1 2,5 4/3 6906B-2-1 - 61325969 6906-61611-BZH 1 2,5 4/3 6906BZH-2 2 61322230 6906-62610 2 2,5 4/3 - - - 56325977 6906-62611 2 2,5 4/3 6906B-3-2 - 64

Design:Compact, pluggable pump unit, can be operated electrically and hydraulically. Complete with: pressure relief valve and pressure switch, solenoid valve, pressure gauge, floating switch with temperature monitoring, oil filling, electrical controller with main switch, control lamps and flange sockets. Electrical connection, complete with CEKON plug, pressure filter with filter mesh of 25m.



Features:The radial piston pump is driven via an alternating current standard motor with the energy efficiency class IE3. The motor is protected against overload by a motor protection switch and a thermoelement. Pressure setting and pressure monitoring are accomplished via a pressure limiting valve (DBV) and an electronic pressure switch (EDS). The value set at the pressure limiting valve is stored with the Mode button on the pressure switch. This simultaneously sets the preprogrammed switch-off and switch-back point. - High safety standard through the use of 3/3- and 4/3-way seat valves! - No unwanted traversing movements. In the event of a loss of power or contact problems, the valve returns to the hermetically sealed centre position. - Easy activation of external machine controllers (e.g. PLC). The pump unit works in intermittent mode. In the event of a loss of pressure, the pump is subsequently automatically switched by the pressure switch. In the event of a lack of oil or an increase in oil temperature, the built-in floating switch with temperature monitoring switches the pump off and the fault lamp on the electrical controller lights up.






Pump unit




unclamp clamp

coup

ling

uncla

mp

posit

ion 0

clamp

unclamp clamp

coup

ling

uncla

mp

posit

ion 0

clamp




Pump unit

Hydraulic diagrams with DBV and EDS1 Clamping circuit, double-acting 2 Clamping circuits, double-acting


from

min.

664 t

o max

.720

from

min.

508 t

o max

.564




Pump unit

No. 6906 pump unit, 1 and 2 clamping circuits

Wiring circuit of pump unit with 2 clamping circuits, remote control

Electrical specifications:Nominal voltage 400 V/50 Hz three-phaseControl voltage 24 V DCValve voltage 24 V DCMotor speed 2900 1/min.Direction of rotation anyMotor rating 1,1 kWMotor type three-phase standard motorNominal current 3 AFuse, supply line 16 A slow-blowFuse, control circuit 2 A primary, 8 A secondaryElectrical connection lflex 100; 51,5 mm2

3 m with CEE connector 16 A 6 hProtection class IP 54 Duty cycle max. 50 % intermittent operation

Hydraulic specifications:Max. operating pressure 400 barOil capacity, reservoir 10 litresOil capacity, usable 4 litresOil-flow rate 2,5 I/min.Valve types 3/3 seat valve and 4/3 seat valveNo. of hydraulic circuits 1 or 2Hydraulic connection pipe fitting G1/4Noise level max. 70 dB(A)Ambient temp. range 10 C to + 35 CPosition of use uprightPump design radial-piston pump with 3 pistonsLoad cycle max. 500/hFluid hydraulic oils

HLP and HLPD according to DIN 51524 part 2Oil recommendation HLP 22 and HLPD 22 or

HLP 32 and HLPD 32Viscosity ISO VG 22 and 32 DIN 51519

clamping unclamping Circuit 1

Position: bottomclamping unclamping

Circuit 2 Position: top

External connection - device ready for operation External voltage max. 250 V, 1 A

coupling - simultaneous clamping and unclamping and subsequent pumping of hydraulic motor are switched off. Malfunction LED lights up, no ready signal for release of external devices.

Pump

Oil level

Ready for operation

Pump

green clamp

green clamp

red unclamp red unclamp

CEE connector

To increase safe handling of the clamped parts, the unit ready for operation and a clamping pressure query should be integrated with the processing machine.

Malfunction OperationMalfunction

remote

contr

ol pa

nel 6

906B

-3-2Motor

protection

S7 = open / (default pos.) S7 = closed / with oil (= in operation)X0 = Coupling connector

Start button must be restarted after power failure or oil deficiency, excess temperature

AMF electron.

Z-DS

Releasing magnets

Clamping magnets

4-pin M12x1 1-brown 2-white 3-blue 4-black



Hydraulic clamping SyStemS 21

FUTURE-COMPATIbLE AND ENVIRONMENTALLY CONSCIOUS AMF PUMP UNITS ARE AHEAD OF THEIR TIMEFUTURE-COMPATIbLE THANKS TO ELECTRIC MOTORS WITH HIGHER ENERGY EFFICIENCY CLASSES

At the end of 2009, a new EU regulation was adopted that defined, among other

things, new guidelines for the environmentally-friendly design of electric motors.

The goal is to reduce energy consumption and thus also CO2 emissions.

On 16th june 2011 the first stage of the transition period will end and the

amendment will enter into force; the second stage will follow in 2017.

our electric motors already comply with these directives, and thus also comply with the energy efficiency classes that will be required in 2017. This is attested by the Pro Energy Efficiency Initiative seal.

the benefits at a glance:> energy-saving operation thanks to optimised energy-saving motor

> greater efficiency

> ecological operation of the pump units

> future-compatible operation, compliant with the 2017 standard.

ENVIRONMENTALLY CONSCIOUS OPERATION WITH bIO OIL

Our new hydraulic pump units can be operated either with conventional

mineral-based industrial oil, or with biodegradable industrial vegetable oil.

the advantages of bio oil:> energy savings of 20 - 30 %

> lower noise level

> longlife oil for longer oil change intervals

> produced on the basis of renewable resources

> highly biodegradable

> not hazardous to waters

> suitable for use in the food industry

> approved by leading machine manufacturers

please get in touch with us!




Order no.


Q

[l/min]


Electronic control

Pressure switch

Weight

[Kg]325985 6906-61720 1 2,5 3/3 - - - 53325993 6906-61721 1 2,5 3/3 6906B-2-1 - 61326017 6906-62720 2 2,5 3/3 - - - 56326025 6906-62721 2 2,5 3/3 6906B-3-2 - 64324590 6906-61620 1 2,5 4/3 - - - 53326033 6906-61621 1 2,5 4/3 6906B-2-1 - 61326041 6906-61621-BZH 1 2,5 4/3 6906BZH-2 2 61324616 6906-62620 2 2,5 4/3 - - - 56326058 6906-62621 2 2,5 4/3 6906B-3-2 - 64

with pressure-control device (DSG), single- and double-acting, max. operating pressure 400 bar.

Pump unitNo. 6906

Design:Compact, pluggable pump unit, can be operated electrically and hydraulically. Complete with: pressure-control device, solenoid valve, pressure gauge, floating switch with temperature monitoring, oil filling, electrical controller with main switch, control lamps and flange sockets. Electrical connection, complete with CEKON plug, pressure filter with filter mesh of 25m.



Features:The radial piston pump is driven via an alternating current standard motor with the energy efficiency class IE3. The motor is protected against overload by a motor protection switch and a thermoelement. Pressure setting and pressure monitoring are made via a pressure control device. This pressure control device combines the pressure-relief valve and the pressure switch in one device. The pressure is continuously adjustable over the entire pressure range by means of an adjustment sleeve. The point for restarting is about 10-15% below the switch-off point. - High safety standard through the use of 3/3- and 4/3-way seat valves! - No unwanted traversing movements. In the event of a loss of power or contact problems, the valve returns to the hermetically sealed centre position. - Easy activation of external machine controllers (e.g. PLC). The pump unit works in intermittent mode. In the event of a loss of pressure, the pump is subsequently automatically switched by the pressure control device. In the event of a lack of oil or an increase in oil temperature, the built-in floating switch with temperature monitoring switches the pump off and the fault lamp on the electrical controller lights up.






Pump unit




unclamp clamp

coup

ling

uncla

mp

posit

ion 0

clamp

unclamp clamp

coup

ling

uncla

mp

posit

ion 0

clamp




1 Clamping circuit, double-acting 2 Clamping circuits, double-actingHydraulic diagrams with DSG

Pump unit


from

min.

664 t

o max

.720

from

min.

508 t

o max

.564




Pump unit

No. 69061 pump unit, 1 and 2 clamping circuits

Wiring circuit of pump unit with 2 clamping circuits, remote control

Electrical specifications:Nominal voltage 400 V/50 Hz three-phaseControl voltage 24 V DCValve voltage 24 V DCMotor speed 2900 1/min.Direction of rotation anyMotor rating 1,1 kWMotor type three-phase standard motorNominal current 3 AFuse, supply line 16 A slow-blowFuse, control circuit 2 A primary, 8 A secondaryElectrical connection lflex 100; 51,5 mm2

3 m with CEE connector 16 A 6 hProtection class IP 54 Duty cycle max. 50 % intermittent operation

Hydraulic specifications:Max. operating pressure 400 barOil capacity, reservoir 10 litresOil capacity, usable 4 litresOil-flow rate 2,5 I/min.Valve types 4/3 seat valve and 3/3 seat valveNo. of hydraulic circuits 1 or 2Hydraulic connection pipe fitting G1/4Noise level max. 70 dB(A)Ambient temp. range 10 C to + 35 CPosition of use uprightPump design radial-piston pump with 3 pistonsLoad cycle max. 500/hFluid hydraulic oils

HLP and HLPD according to DIN 51524 part 2Oil recommendation HLP 22 and HLPD 22 or

HLP 32 and HLPD 32Viscosity ISO VG 22 and 32 DIN 51519

clamping unclamping Circuit 1

Position: bottomclamping unclamping

Circuit 2 Position: top

External connection - device ready for operation External voltage max. 250 V, 1 A

coupling - simultaneous clamping and unclamping and subsequent pumping of hydraulic motor are switched off. Malfunction LED lights up, no ready signal for release of external devices.

Pump

Oil level

Ready for operation

Pump

green clamp

green clamp

red unclamp red unclamp

CEE connector

To increase safe handling of the clamped parts, the unit ready for operation and a clamping pressure query should be integrated with the processing machine.

Malfunction OperationMalfunction

remote

contr

ol pa

nel 6

906B

-3-2Motor

protection

S7 = open / (default pos.) S7 = closed / with oil (= in operation)X0 = Coupling connector

Start button must be restarted after power failure or oil deficiency, excess temperature

Releasing magnets

Clamping magnets




MODULAR PUMP UNIT NO. 6906

RKP 2.5 : Q = 2.5 l/min, n = 2900 U/min.

Tank volume 10 dm, P = 1.1 kW

OPTIONS:

tank volume: 10.0 litres

oil capacity, usable: 4.0 litres

oil-flow rate: 2.5 l/min. or 5.0 l/min.

clamping Up to 5 clamping circuits including circuits: electrical control. For more than 5 clamping circuits without electrical

control.

Further options: > Two-hand remote-control panel (only for pump units with 1 clamping circuit)

> Pressure-control device for stepless pressure adjustment by a single spindle

> Valve combinations with pressure- control and throttle valves

BaSe unit ... witH ValVeS ... witH ValVeS and controller




Spacer plates - pressure-control valve Control function in P

Spacer plates - twin-type throttle check valve

Valve combinations in the modular system

Spacer plates - 3-way pressure-control valve Control function in P

Spacer plate with connectable throttle Function in P




Valve combinations in the modular system

Combination of directional valve zero position, in which A, B and T are

connected, plus pressure control in P with two pressure levels in one circuit.

Combination of directional valve zero position, in which A, B and T are

connected, plus unlockable check valves at the consumer.

Special ValVeS aVailaBle on requeSt

no. 6910a-07-02 no. 6911a-07-01 no. 6911a-07-02

Clamping device




with pinCoupling PlugNo. 6906BS-1

Order no.

Article no. Control voltage Number of poles Weight

[g]60772 6906BS-1 24 V = 24 122

Design:Aluminium die-case housing. In locked position - protection class IP65.

Application:Connection to the machine side as replacement part for control panel or for external control of pump unit.

Pressure switch for machine enablingNo. 6906BS-3 with pin

Control of valvesNo. 6906BS-4 with bush

No. 6906BS-1 with pin

AMF control console No. 6906B-3-2 or No. 6906B-2-1

Controller AMF pump unit no. 6906

No. 6906BS-2 with bush

For pressure switch for machine enabling

with pinSurface-mounted housingNo. 6906BS-3

Order no.


[g]66118 6906BS-3 24 V = 24 145


Application:Connection to the unit side for external querying of pressure and temperature.

with bushCoupling PlugNo. 6906BS-2

Order no.


[g]61895 6906BS-2 24 V = 24 122


Application:Connection to the unit side for external querying of pressure and temperature.

with bushSurface-mounted housingNo. 6906BS-4

Order no.


[g]66126 6906BS-4 24 V = 24 145


Application:Connection to the machine side as replacement part for pump unit.

Accessories for pump unit




1-circuit control switch (rotary switch)No. 6906B-2-1

2-circuit control switch (rotary switch)No. 6906B-3-2

Two-hand safety operator panelNo. 6906BZH-2

Design:Compact cast aluminium housing with control elements, cable and coupling plug. Base device conforming to EN 574 Type IIIC, IEC 204-1 and EN 954-1. Two-channel control, 1 closer and 1 opener per channel. Monitoring of synchronous actuation. The evaluation device reaches safety category 4 and stop category 0!

Application:The two-hand control panel may be used only in combination with pump units from Andreas Maier GmbH & Co. KG. The two-hand control panel is used for controlling fixtures (cylinders, etc.) where dangerous run-out and run-in movements (strokes 4 mm) can occur. The following fluid-mechanical system requirements are necessary for the remote control switch to function: - 4/3 seat valve with hermetically sealed locked zero position. Alternatively, the combination of a 4/3-way valve, in which A, B and T are connected and P locked in the zero position, with at least one controlled check valve for the dangerous consumer line, or a controlled twin check valve, is possible. - Install pressure switch in the A and B channels. (The pressure switches must be ordered separately.)In the AMF pump units, the A-channel is normally assigned to clamping and the B-channel to releasing.

Mounting: Plug the cable with the plug into the remote control connector of the pump unit. Electrically connect the pressure switch. Set the pressure switch to operate at about 75% of the pressure in the clamping circuit.

Operation: Key switch for turning on and switching to zero position and coupling position. Rotary switch for selecting the functions - clamping, releasing and zero position. Stop switch to switch off quickly in case of danger. Two-hand pushbutton for initiating movements. Indicator lights signal the control situation.

General: After a loss of electric power and a subsequent restoration of power, it is necessary to re-clamp. With the pump unit no. 6906, the magnet on the directional control valve remains energised after locking.

Note:Every user of the two-hand control switch must determine through his own risk analysis what safety category can be achieved for his system or machine.

Design:Compact polyester housing with control elements, cable and coupling plug. Protection class IP65.

Application:Control switch no. 6906B-3-2 has for each clamping circuit a clamping-0-unclamping-coupling selector switch and a black STOP mushroom-head pushbutton for stopping the pump and valves (blocking position). During clamping and unclamping the corresponding valve is switched. In the 0 position the valves move to the blocking position. In the coupling position both magnets are switched at the same time. The pump is switched off and the fault lamp on the unit lights up. In addition, readiness for external machine enabling is switched off. In external machine enabling, the signal ready for operation and one pressure switch on each of the clamping points to be monitored should be integrated.

Order no.

Article no. Control voltage Number of poles Cable length

[m]

Weight

[g]324723 6906B-2-1 24 V = 24 5 1660

No. 6906B-3-2No. 6906B-2-1

Order no.

Article no. Control voltage Cable length

[m]

Weight

[g]324426 6906BZH-2 24 V = 5 4840

Accessories for pump unit




Hydraulic clamping




Type Clamping force [kN]

Pull force [kN]

Clamping stroke [mm]

No. of models Operatingmode

6920 20 - 125 20 - 125 8 - 20 5 single acting

6920G 20 - 125 20 - 125 8 - 20 5 single acting

6920D 18 - 188 14 - 153 10 - 25 6 double acting

6921 71 - 110 71 - 110 6 - 10 2 single acting

6935 20 - 53 20 - 53 6,5 - 12,5 6 single/ double acting

PRODUCT ExAMPLES:

no. 6920 no. 6920d no. 6935

PRODUCT OVERVIEW:

> clamping force up to 188 kN


> hollow-piston rod with through-hole, with or without

internal thread

> particularly suitable to convert existing mechanical

f ixtures into hydraulically operated fixtures

> for push- and pull operation


> wipers to protect against contamination

At continuous pressures below 80 bar, this must be stated

on ordering as a dif ferent seal combination may need to be

selected.

HOLLOW-ROD CYLINDER FOR MULTIPLE USE

IN MANUFACTURING PROCESSES

> Clamping force: 20 - 125 kN > Cylinder housing: without external thread

> Clamping force: 18 - 188 kN > Cylinder housing: with external thread

> Clamping force: 20 - 53 kN > Cylinder housing: nitrided, without external thread, compact design




Hollow Rod Cylinders

... reaming

... under extreme conditions

... milling




Hollow-piston cylinder no. 6920-50 in milling device for link lever.

single acting, spring return, max. operating pressure 400 bar.

Hollow Rod CylinderNo. 6920

Design:Cylinder housing made of steel, blued. Piston and piston rod case-hardened and ground. Built-in return spring. Sinter metal breather. Two wipers and vent screw.

Application:Particularly suitable for retrofitting existing fixtures for hydraulic actuation. When workpieces are clamped onto a machine tool table, the hollow rod cylinder can be fitted over the clamp bolt instead of the nut. The hollow rod cylinders can be used for push or pull applications.

Features:Completely sealed against contamination and chips by means of sinter metal breather and two wipers. Piston can be moved to its end stop. Oil connection at both ends, thus easy lining up in series.

Note:Cylinders are designed for use in combination with tempered bolts, material grade 8.8, e. g. DIN 787 and DIN 6379. Bolts matching the hole are recommended. For single acting cylinders there is risk of sucking in coolant during the return stroke. In this case the cylinders have to be protected against the direct effect of coolant. The sinter metal breather should be protected.

Hollow Rod Cylinder

Order no.

Article no. push force at 100 bar

[kN]

push force at 400 bar

[kN]

Stroke H

[mm]

Vol.

[cm]

effective piston area

[cm]

Spring force min.

[N]

Weight

[g]64998 6920-20 5,0 20 8 4 4,9 200 93063016 6920-32 8,0 32 10 8 8,0 350 173065011 6920-50 12,5 50 12 15 12,8 540 165063057 6920-80 20,0 80 15 30 20,0 750 385065003 6920-125 32,0 125 20 64 32,8 1120 6250

Order no.

Article no. Piston dia.

[mm]

A dia. D dia. F K L dia. M dia. N R

64998 6920-20 32 80 52 40 56,0 82 12,5 20 G1/863016 6920-32 40 90 60 44 60,5 94 14,5 24 G1/865011 6920-50 48 101 70 50 71,5 103 18,5 26 G1/863057 6920-80 60 115 80 60 87,0 119 22,5 32 G1/465003 6920-125 75 149 100 75 108,0 151 27,5 38 G1/4

Dimensions:




Hollow Rod Cylinder


Hollow Rod Cylinder with internal threadNo. 6920G

Design:Cylinder housing made of steel, blued. Piston and piston rod case-hardened and ground. Built-in return spring. Sinter metal breather. Two wipers and vent screw.


Features:Completely sealed against contamination and chips by means of sinter metal breather and two wipers. Piston can be moved to its end stop. Oil connection at both ends, thus easy lining up in series.

Note:Cylinder size 20 to 50 are designed for use in combination with tempered bolts, material grade 8.8. For size 80 and 125 bolts of material grade 12.9 must be used. For single acting cylinders there is risk of sucking in coolant during the return stroke. In this case the cylinders have to be protected against the direct effect of coolant. The built in sinter metal breather should be protected.

Order no.


[mm]

A dia. D dia. F K L dia. M dia. N R P Gx Length

S

65318 6920G-20 32 80 52 40 56,0 90,0 12,5 20 G1/8 27 M12x29 1763032 6920G-32 40 90 60 44 60,5 101,5 14,5 24 G1/8 30 M14x30 1965334 6920G-50 48 101 70 50 71,5 113,0 16,5 26 G1/8 35 M16x39 2263073 6920G-80 60 115 80 60 87,0 132,5 18,5 32 G1/4 38 M18x38 2765359 6920G-125 75 149 100 75 108,0 163,0 20,5 38 G1/4 49 M20x47 32

Dimensions:

Hollow-piston cylinder no. 6920G-125 in powder welding system for clamping of U-profile panels.

Order no.


[kN]


[kN]

Stroke H

[mm]

Vol.

[cm]


[cm]

Spring force min.

[N]

Weight

[g]65318 6920G-20 5,0 20 8 4 4,9 200 100063032 6920G-32 8,0 32 10 8 8,0 350 175065334 6920G-50 12,5 50 12 15 12,8 540 170063073 6920G-80 20,0 80 15 30 20,0 750 390065359 6920G-125 32,0 125 20 64 32,8 1120 6400

hex.




Hollow Rod Cylinder

double acting, max. operating pressure 500 bar.

Hollow Rod CylinderNo. 6920D

Design:Cylinder housing made of steel, blued. Piston case-hardened and ground. Piston rod is always furnished with HC thread. lf a piston rod with internal thread is desired, a HELI-COIL insert (diameter x1.5) is screwed into the HC thread.


Note:Cylinders are designed for use in combination with tempered bolts, material grade 12.9 (e.g. DIN 787). Threaded body provides a wide range of adjustability. Suitable flange nuts DIN 70852.

Order no.

Article no. A D dia. F G K L L1 dia. M dia. N dia. P R dia. S

62794 6920D-15-001 59 M50x1,5 35 HCM 8 11 60 36 8,2 16 12 G1/8 2562836 6920D-24-001 64 M55x1,5 40 HCM 10 12 65 41 10,2 20 16 G1/4 3262844 6920D-38-001 72 M65x1,5 45 HCM 12 14 73 45 12,2 25 20 G1/4 4062851 6920D-59-001 78 M70x1,5 50 HCM 16 14 79 50 16,2 32 25 G1/4 5062869 6920D-92-001 95 M80x2,0 60 HCM 20 18 96 60 20,2 40 32 G1/4 6362877 6920D-150-001 109 M100x2,0 75 HCM 27 22 110 65 27,2 50 40 G1/4 80

Dimensions:

Order no.

Thread insert for cylinder size Weight

[g]67538 M 8x12 6920D-15-001 167546 M10x15 6920D-24-001 367595 M12x18 6920D-38-001 467603 M16x24 6920D-59-001 967611 M20x30 6920D-92-001 1967629 M27x40,5 6920D-150-001 43

Note:The HELI-COlL thread insert can be installed using a manual or automatic installation tool. The dri-ving pin is used only for installation, and must subsequently be removed using a special pin-breaker. Without the HELI-COlL insert the piston through-hole has the value of the gap M (see dimensions table).

Order no.

Article no. push force VH 100 bar

[kN]

push force VH at 500 bar

[kN]

push force RH at 100 bar

[kN]


[kN]

Stroke H

[mm]

Vol. VH

[cm]

Vol. RH

[cm]

effektive piston area VH

[cm]

effective piston area RH

[cm]

Weight

[g]62794 6920D-15-001 3,77 18,85 2,89 14,45 10 3,77 2,89 3,77 2,89 85062836 6920D-24-001 6,03 30,15 4,90 24,50 10 6,03 4,90 6,03 4,90 110062844 6920D-38-001 9,42 47,10 7,65 38,25 16 15,10 12,20 9,42 7,65 165062851 6920D-59-001 14,72 73,60 11,59 57,95 16 23,50 18,50 14,72 11,59 200062869 6920D-92-001 23,12 115,60 18,60 93,00 20 46,20 37,20 23,12 18,60 305062877 6920D-150-001 37,68 188,40 30,63 153,15 25 94,20 76,50 37,68 30,63 5350

VH = work stroke, RH = back stroke

AccessoriesHELI-COIL thread insert

M8 10 depth





Hollow Rod CylinderNo. 6921

Hollow Rod Cylinder

Design:Cylinder housing made of steel, blued. Piston and piston rod case-hardened and ground. Retraction by disc spring. One wiper. Piston rod with internal thread and two flats (size 70 x 6) or hexagon (size 100 x 10). Sinter metal breather.

Application:When workpieces are clamped onto a machine tool table, the hollow rod cylinder can be screwed onto the clamp bolt and be joined to the clamp by the two threads in the body. Also suitable for holding and clamping devices directly on a machine tool table. The hollow rod cylinder is designed for use in combination with tempered bolts of material grade 8.8 for size 100x10 and material grade 12.9 for the size 70x6. In case bolts of material grade 8.8 and grade 10.9 are used the pressure has to be reduced for size 70x6 for continuous operation (see diagramme).

Features:Protected against contamination and chips by a wiper. High forces in a small design.

Note:For single acting cylinders there is risk of sucking in coolant during the return stroke. In this case the cylinders have to be protected against the direct effect of coolant. The built in sinter metal breather should be protected.

Order no.


[mm]

A B dia. C dia. D E F G K L M R S

63768 6921-70x6 55 58 10 16,5 75 26 50 M8 13 65 M16 G1/4 SW2263149 6921-100x10 70 85 10 25,0 100 56 70 M10 16 97 M24 G1/4 SW36

Dimensions:

Diagram for size 70x6:

Application example:

Order no.


[kN]


[kN]

Stroke H

[mm]

Vol.

[cm]


[cm]

Spring force min.

[N]

Weight

[g]63768 6921-70x6 17,8 71 6 11 18,5 700 167563149 6921-100x10 24,4 101 10 26 25,9 1500 4800

Adjustment optionsThe shown hydraulic clamping device shows casts of several sizes that are clamped by hydraulic pulldown clamp no. 6972F and pull-down counterpart no. 6977. To obtain an efficient means of adjustment, 2 base plates are each equipped with 6 hydraulic nuts no. 6921 which are connected to the grooved table via bolts for T-nut according to DIN 787. The adjustment of the base plate and the clamping of the workpiece can be performed independently by a pump unit with 2 clamping circuits.

Grooved table

No. 6921

No. 6972

No. 6977

Baseplate

Longterm reliability diagram for clamping bolts M 16 according to DIN 787, ISO 4762, ISO 4014 and grades 8.8, 10.9, 12.9

Cla

mpi

ng fo

rce

F [k

N]

Clam

ping p

ress

ure p

[bar]

Number of clamping cycles




Hollow Rod Cylinder

The figure shows hydraulic nuts no. 6921S clamping an injection mould. The hydraulic nuts are uncoupled from the pressure generator, with the tension being provided by the lock nut.

single acting, spring return.

Hollow Rod Cylinder with mechanic locking

No. 6921S

Design:Cylinder housing made of steel, blued. Piston and piston rod case-hardened and ground. Retraction by disc springs. Locking enable due external thread on piston rod and hand-locking nut. Wiper to protect against contamination.

Application:Typical use on injection molding machines and presses to hold the molds and dies.

Features:After clamping process the piston will be kept and secured in clamping position by fastening the hand nut. Hydraulic pressure can be released and the power source disconnected. For unclamping, the cylinder has to be pressurised in order to allow a free movement of the hand nut back into its original position.

Note:For single acting cylinders there is risk of sucking in coolant during the return stroke. In this case the cylinders have to be protected against the direct effect of coolant. The built in sinter metal breather should be protected.

Order no.


[kN]


[kN]

max. operating pressure

[bar]

Stroke H

[mm]

Vol.

[cm]


[cm]

Spring force min.

[N]

Weight

[g]69047 6921S-46x 6 17,8 45,5 250 6 11 18,5 700 215069005 6921S-77x100 24,4 63,2 300 10 26 25,9 1500 5150

Order no.


[mm]

A B dia. C dia. D E F G K L M dia. N R

69047 6921S-46x 6 55 58 10 16,2 75 25 50 M 8 13 85 M24x1,5 55 G1/469005 6921S-77x100 70 85 10 24,2 100 30 70 M10 16 118 M38x1,5 70 G1/4

Dimensions:Lock nut




single and double acting, max. operating pressure 350 bar.

Hollow Rod Cylinder with internal threadNo. 6935

Hollow Rod Cylinder

Design:Cylinder housing made of steel, hardened and blued. Piston and piston rod case-hardened and ground. Piston rod with internal thread. Wiper at piston rod. Return spring made of stainless steel.

Application:Particularely suitable to retrofit existing mechanical fixtures for hydraulic actuation. The hollow cylinder can be operated as push or pull cylinder. Universal cylinder for clamping, pushing, locking and punching.

Features:Clamping cylinder with tapped piston rod. Tapped piston rod ends allow the use of custom end attachments.

Note:For single acting cylinders there is the risk of succing in coolant through the breather port. Therefore, the sinter metal breather has to be protected e.g. by cover plates from direct access of coolant. The system has to be completely vented thoroughly during installation.

Order no.

Article no. push force VH 100 bar

[kN]

push force VH 350 bar

[kN]


[kN]


[kN]

Stoke B

[mm]

Vol.

[cm]


[cm]

Weight

[g]67850 6935-20 5,8 20,6 - - 6,5 3,8 5,9 57267876 6935-30 8,4 29,7 - - 9,5 8,1 8,5 94067892 6935-53 15,2 53,2 - - 12,5 19,3 15,2 183767918 6935D-20 5,8 20,6 5,8 20,6 6,5 3,8 5,9 57267934 6935D-30 8,4 29,7 8,4 29,7 9,5 8,1 8,5 94067959 6935D-53 15,2 53,2 15,2 53,2 12,5 19,3 15,2 1837

Dimensions:Order

no.Article no. A C D E F G H J K L M N P Q S

67850 6935-20 51,0 7,0 43,5 41,5 32 M10 28,5 M6x6 10,5 12 20,5 15 55 16,0 39,567876 6935-30 63,5 7,0 56,5 49,5 36 M12 24,5 M8x8 13,5 18 25,5 15 62 19,0 47,567892 6935-53 76,0 9,5 66,0 64,5 50 M16 25,0 M10x13 16,5 23 30,0 18 76 25,5 63,567918 6935D-20 51,0 7,0 43,5 41,5 32 M10 28,5 M6x6 10,5 12 20,5 15 55 16,0 39,567934 6935D-30 63,5 7,0 56,5 49,5 36 M12 24,5 M8x8 13,5 18 25,5 15 62 19,0 47,567959 6935D-53 76,0 9,5 66,0 64,5 50 M16 25,0 M10x13 16,5 23 30,0 18 76 25,5 63,5


Vent screw for single-action version

Oil connection







No. of models Operatingmode

6924 4,5 - 70 6 - 15 7 single acting

6925 4,4 - 39,9 6,5 - 32 11 single acting

6925D 17,8 - 39,9 25,5 - 51 4 double acting

PRODUCT ExAMPLES:

no. 6924 no. 6925 no. 6925d

PRODUCT OVERVIEW:



> piston with and without internal thread

> for push- and pull operation

> quick adjustment, secured using standard grooved nuts

> single and double acting variants




selected.

bUILT-IN CYLINDERS FOR UNIVERSAL USE

> Clamping force: 4,5 - 70 kN > Cylinder housing: with fine thread

> Clamping force: 4,4 - 39,9 kN > Cylinder housing: nitrided, with fine thread

> Clamping force: 17,8 - 39,9 kN > Cylinder housing: nitrided, with fine thread




built-In Cylinder


Built-In CylinderNo. 6924

Design:Cylinder made of steel, blued. Piston and piston rod case-hardened and ground. Built-in return spring. Sinter metal breather. Wiper at piston rod. Cylinder housing with metric thread for flange nuts DIN 70852.

Application:Suitable for converting mechanical to hydraulic clamping devices. The built-in cylinder is inserted in through holes and counter screwed at both ends with grooved nuts. General-purpose clamping element for clamping, pushing, pressing, riveting and punching.

Features:The metric thread extending over the whole length of the cylinder permits with its two flange nuts DIN 70852 lengthwise adjustment over a large range and fast positioning in the requiredby by two flange nuts. Fast attachment of fixture elements and thrust pieces the piston thread.

Note:For single acting cylinder types there is a risk of sucking coolant liquid at the return stroke. In this case the cylinder has to be protected against the direct effect of coolant. The built in sinter metal breather should be protected.

Order no.

Article no. A dia. D dia. E F G K x depth L S R

63024 6924-05 50,0 4 8 20 M30x1,5 M4x10 56,0 6 G1/863099 6924-08 46,5 4 10 20 M32x1,5 M5x12 52,5 8 G1/863115 6924-12 59,0 5 12 28 M38x1,5 M6x14 65,5 9 G1/463131 6924-20 63,5 4 12 25 M40x1,5 M8x20 70,5 10 G1/463164 6924-32 72,0 4 16 30 M48x1,5 M10x25 81,0 13 G1/463156 6924-50 80,0 5 20 35 M60x1,5 M12x28 89,0 17 G1/463180 6924-70 93,0 6 25 44 M70x1,5 M16x35 105,0 22 G1/4

Dimensions:

Order no.

Article no. Push force at 100 bar

[kN]

Push force at 400 bar

[kN]

Stroke H

[mm]

Vol.

[cm]

Piston dia.

[mm]

Piston area

[cm]

Spring force min.

[N]

Weight

[g]63024 6924-05 1,1 4,5 6 0,66 12 1,1 45 30063099 6924-08 2,0 8,0 6 1,20 16 2,0 60 27063115 6924-12 3,0 12,0 8 2,50 20 3,1 95 48063131 6924-20 5,0 20,0 8 4,00 25 4,9 205 50063164 6924-32 8,0 32,0 10 8,00 32 8,0 340 85063156 6924-50 12,5 50,0 12 15,00 40 12,5 400 145063180 6924-70 17,5 70,0 15 27,00 48 18,0 650 2050




built-In Cylinder

single acting, max. operating pressure 350 bar.

Built-In CylinderNo. 6925

Design:Cylinder housing made of steel, hardened and blued. Piston and piston rod case-hardened and ground. Piston rod with internal thread. Wiper at piston rod. Cylinder housing with metric fine thread for flange nut as per DIN 70852. Return spring out of stainless steel.

Application:Suitable to convert mechanical fixtures into hydraulic operated. The built-in cylinder can easily be mounted and adjusted into fixture walls by grooved nuts. Universal cylinder for clamping, pushing, locking and rivetting.

Features:The metric thread extending over the whole length of the cylinder permits with its two flange nuts DIN 70852 lengthwise adjustment over a large range. Tapped piston rod end allows the use of individual contact bolts.

No. 6925-10No. 6925-04

No. 6925-10No. 6925-04

Order no.

Article no. A B D E F G J SW

67975 6925-04-1 - 51,0 6,5 1,5 6,5 M20x1,5 - 1667991 6925-04-2 - 65,5 6,5 1,5 6,5 M20x1,5 - 1668015 6925-04-3 - 83,0 6,5 1,5 6,5 M20x1,5 - 1668031 6925-10-1 6,5 55,5 12,5 24,5 12,5 M28x1,5 M6x11 -67801 6925-10-2 6,5 68,5 12,5 24,5 12,5 M28x1,5 M6x11 -67827 6925-10-3 5,0 86,0 12,5 24,5 12,5 M28x1,5 M6x11 -

Dimensions:

Order no.


[kN]


[kN]

Stroke C

[mm]

Vol.

[cm]

Piston area

[cm]

Weight

[g]67975 6925-04-1 1,25 4,4 9,5 1,2 1,3 7367991 6925-04-2 1,25 4,4 19,0 2,5 1,3 9168015 6925-04-3 1,25 4,4 32,0 4,1 1,3 11868031 6925-10-1 2,88 10,1 6,5 1,8 2,9 20067801 6925-10-2 2,88 10,1 19,0 5,5 2,9 21067827 6925-10-3 2,88 10,1 32,0 9,2 2,9 254




built-In Cylinder

single and double acting, max. operating pressure 350 bar.

Built-In CylinderNo. 6925D

Design:Cylinder housing made of steel, hardened and blued. Piston and piston rod case-hardened and ground. Piston rod with internal thread. Wiper at piston rod. Cylinder housing with metric fine thread for flange nut as per DIN 70852.

Application:Suitable to convert mechanical fixtures into hydraulic operated. The built-in cylinder can easily be mounted and adjusted into fixture walls by flange nuts. Universal cylinder for clamping, pushing, locking, rivetting and punching.

Features:The metric thread extending over the whole length of the cylinder permits with its two flange nuts DIN 70852 lengthwise adjustment over a large range. Tapped piston rod end allows the use of individual contact bolts.

Note:The system has to be completely vented during installation.


Order no.

Article no. Push force VH at 100 bar

[kN]

Push force VH at 350 bar

[kN]

Pull force RH at 100 bar

[kN]

Pull force RH at 350 bar

[kN]

Stroke C

[mm]

Vol. VH

[cm]

Vol. RH

[cm]

Piston area VH

[cm]

Piston area RH

[cm]

Weight

[g]67843 6925-18-1 5,08 17,8 - - 12,5 6,4 - 5,1 - 30467868 6925-18-2 5,08 17,8 - - 25,5 13,0 - 5,1 - 35467884 6925-18-3 5,08 17,8 - - 51,0 26,0 - 5,1 - 46367900 6925-40-1 11,40 39,9 - - 12,5 14,2 - 11,4 - 64467926 6925-40-2 11,40 39,9 - - 25,5 29,0 - 11,4 - 74467942 6925D-18-1 5,08 17,8 1,6 5,9 25,5 13,0 4,4 5,1 1,7 76267967 6925D-18-2 5,08 17,8 1,6 5,9 51,0 26,0 8,8 5,1 1,7 106167983 6925D-40-1 11,40 39,9 5,0 17,5 25,5 29,0 12,7 11,4 5,0 137968007 6925D-40-2 11,40 39,9 5,0 17,5 51,0 58,1 25,5 11,4 5,0 1869

Dimensions:Order

no.Article no. A B D E F G SW J K L M N

67843 6925-18-1 20,1 68,0 12,5 39,5 8 M35x1,5 17 M8x11 6,5 30,5 - -67868 6925-18-2 20,1 80,5 12,5 52,5 8 M35x1,5 17 M8x11 6,5 30,5 - -67884 6925-18-3 20,1 109,0 12,5 81,0 8 M35x1,5 17 M8x11 6,5 30,5 - -67900 6925-40-1 28,2 70,0 12,5 39,5 10 M48x1,5 25 M12x13 9,0 45,0 - -67926 6925-40-2 28,2 83,0 12,5 52,5 10 M48x1,5 25 M12x13 9,0 45,0 - -67942 6925D-18-1 20,1 80,5 12,5 52,5 8 M48x1,5 17 M8x11 6,5 45,0 14,0 1467967 6925D-18-2 20,1 109,0 12,5 81,0 8 M48x1,5 17 M8x11 6,5 45,0 14,0 1467983 6925D-40-1 28,2 82,0 12,5 52,5 10 M65x1,5 25 M12x13 9,0 60,5 20,5 1168007 6925D-40-2 28,2 111,0 12,5 81,0 10 M65x1,5 25 M12x13 9,0 60,5 20,5 11

G1/8 Oil connection of double-acting version

G1/8 Oil connection of single-acting version




Flange NutDIN 70852

* not to DIN

Design:Steel, zinc-plated.

Application:The flange nuts hold cylinders in the required position.

Order no.

Article no. dia. A B dia. D E F G Nos grooves Weight

[g]63974 70852-M20 27 6 32 5,5 2,3 M20x1,5 4 1963784 70852-M28 36 7 42 6,5 2,8 M28x1,5 4 3563792 70852-M30 38 7 44 6,5 2,8 M30x1,5 4 3663800 70852-M32 41 8 48 7,0 3,3 M32x1,5 4 5263818 70852-M35 43 8 50 7,0 3,3 M35x1,5 4 5163826 70852-M38 47 8 54 7,0 3,3 M38x1,5 4 6063834 70852-M40 49 8 56 7,0 3,3 M40x1,5 4 6263842 70852-M48 57 8 65 8,0 3,8 M48x1,5 6 7563859 70852-M50 60 8 68 8,0 3,8 M50x1,5 6 8463867 70852-M52 62 8 70 8,0 3,8 M52x1,5 6 8763875 70852-M55 67 8 75 8,0 3,8 M55x1,5 6 10063883 70852-M58 * 71 9 80 11,0 4,3 M58x1,5 6 14063891 70852-M60 71 9 80 11,0 4,3 M60x1,5 6 13063909 70852-M65 76 9 85 11,0 4,3 M65x1,5 6 13063917 70852-M70 81 9 90 11,0 4,3 M70x1,5 6 14063925 70852-M80 * 91 10 100 11,0 4,3 M80x2,0 6 180

267062 70852-M85 * 99 10 108 11,0 4,3 M85x2,0 6 23963933 70852-M100 * 116 10 125 11,0 4,3 M100x2,0 6 299

Accessories for built-In Cylinder




Hydraulic clamping




PRODUCT ExAMPLES:

no. 6930 no. 6932 no. 6934

PRODUCT OVERVIEW:



No. of models Operating mode

6929 2,5 - 40,0 5 - 20 8 single-acting

6930 5,5 - 40,0 10 - 20 5 single-acting

6930D 4,5 - 50,0 12 - 40 6 double-acting

6932 2,5 - 24,5 4 - 12 5 single-acting

6933 5,5 - 40,0 8 - 12 5 single-acting

6934 2,4 - 17,5 5 - 19 5 single-acting

> Clamping force: 5.5 - 40 kN > Cylinder housing: with fine thread

> Clamping force: 2.5 - 24.5 kN > Cylinder housing: with fine thread

> Clamping force: 2.4 - 17.5 kN > Cylinder housing: nitrided, with f ine thread



> piston with and without internal thread


> oil supply via fixture body




selected.

THREADED CYLINDERS - SPACE-SAVING AND

EASY TO INSTALL




Threaded Cylinder

single acting, spring return, max. operating pressure 500 bar, min. operating pressure 25 bar.

Threaded Cylinder for tube connection, with spherical piston rod

No. 6929-03

Design:As No. 6929, but with cap screw and cutting ring.

Features:Hoses or tubes can be directly screwed onto the threaded cylinders.

Note:Pistons of these cylinders must not be loaded in retracted position. Care for protection against aggressive lubricants and coolants. As the cylinder has no stop for the tube, the preassembly of the cutting ring has to be effected by means of a hardened pre-mounting tool. Due to the construction size, an internal stop for the piston is not possible. Therefore, please do not operate the threaded cylinder without workpiece, as the spring could be damaged or its spring force could be reduced.

Order no.

Article no. A B dia. E F G Stroke H

[mm]

~L R SW

60111 6929-03x10 48 1 5 6 M16x1,5 10 57 6 13

Dimensions:

Order no.


[kN]


[kN]

Vol.

[cm]

Piston dia.

[mm]

Piston area

[cm]

Spring force min.

[N]

Weight

[g]60111 6929-03x10 0,5 2,5 0,5 8 0,5 24 80

Application examples no. 6929-03:

article no. 6994-10 article no. 6994-07 Hexagonal nutorder no. 170316 order no. 160200 ISO 4035-M16x1,5

Cap nut m8S (SW19) with olive s8S




Threaded Cylinder

single acting, spring return, max. operating pressure 500 bar, min. operating pressure 25 bar.

Threaded Cylinder bottom sealing, with spherical piston rod

No. 6929

Design:Cylinder housing made of steel, blued. Piston and piston rod case-hardened and ground. Wiper on piston rod. Built-in return spring. Attachment with standard fine thread. With plasti

Date post:	15-Oct-2015
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